How to convert years to days
Years and Days both measure time, so converting is a single multiplication. One yr equals 365.25 d, so you multiply your years value by 365.25.
Formula: days = years × 365.25. For example, 10 yr = 3,652.5 d.
Years to Days conversion table
| Years (yr) | Days (d) |
|---|---|
| 1 | 365.25 |
| 2 | 730.5 |
| 5 | 1,826.25 |
| 10 | 3,652.5 |
| 25 | 9,131.25 |
| 50 | 18,262.5 |
| 100 | 36,525 |
| 1,000 | 365,250 |
Years and Days explained
Years (yr): About 365.25 days, accounting for leap years.
Days (d): Twenty-four hours (86,400 seconds).
When you'd convert years to days
You'll convert years to days whenever a measurement is given in one unit but you need it in the other — comparing years and days figures across regions, following a recipe or spec, or double-checking a number. Because 1 yr is exactly 365.25 d, the result is precise every time.
Frequently asked questions
How many days are in a year?
One yr equals 365.25 d. Multiply your years figure by 365.25 to get days.
What is the formula to convert years to days?
days = years × 365.25. The factor 365.25 is exact.
What is 2 years in days?
2 yr = 730.5 d. You can enter any value in the converter above to get an instant result.
Is this Years to Days converter accurate?
Yes. It uses the standard conversion factor (1 yr = 365.25 d) defined by BIPM — SI Brochure (definition of the second), so results are exact to several decimal places.